The current transformer is a device used to measure alternating current. Many people may ask, why to use the current transformer if the current can be measured using a multimeter! Current transformers are mainly used…
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We know that measuring high voltages in transmission and distribution systems is not easy. Instrument transformer is used to measure high voltage. The current transformer is used to measure the current of the transmission and…
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We know that cable selection is mainly based on circuit breakers. The circuit breaker rating is a little higher than what it is or the cable rating is required at the above rating. However, cable…
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Busbar calculations – Busbar is a copper or aluminum conductor or conveyor bar that collects power from one or a single electrical circuit and supplies or distributes power to one or one electrical circuit. Calculations…
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Suppose the boss of the office gave you a task that you have to make an electrical cable selection on the LT side or the low voltage side of the substation, what would you do?…
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Mostly we want to control the speed of a DC motor on demand. This intentional change of drive speed is known as speed control of dc motor. Speed control of a Direct current motor is…
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The performance of a DC motor can be judged by its speed-torque characteristics and a motor for any particular application can be selected easily. In this article, speed-torque characteristics are discussed in detail. DC MOTOR…
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An induction motor also known as an asynchronous motor is a generally used AC electric motor. For an induction motor, the electrical current or AC in the rotor needed to produce torque is gain through electromagnetic induction from the rotating…
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An alternator is an electrical generator that converts energy to power within the sort of electrical energy. For reasons of price and ease, most alternators use a rotating field with a stationary coil. Therefore the…
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An alternator is an electrical apparatus which converts mechanical energy into alternating electric energy. They are also called as synchronous generators.working principle of alternator Accordingly, Faraday’s Laws of Electromagnetic Induction, the e.m.f. induced in the…
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